Data Science Math Skill By Coursera All Quiz Answers
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Data Science Math Skill
Institution
Duke University
Data Science Math Skill By Coursera All Quiz Answers pdf.
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Total 120 Mcq Question With Answers
5/25/2020 Practice quiz on Sets | Coursera
Practice quiz on Sets
TOTAL POINTS 3
1. Let A = {1, 3, 5}. Is the following statement: 3 ∈ A. True or false? 1 / 1 point...
data science math skill by coursera all quiz answers
data science math skill by coursera
data science math skill by coursera all quiz answers pdf
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Data Science Math Skill
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,5/25/2020 Practice quiz on Sets | Coursera
Practice quiz on Sets
TOTAL POINTS 3
1.
Let A = {1, 3, 5}. Is the following statement: 3 ∈ A. True or false? point
True
False
Correct
The symbol ∈ stands for “is an element of” and it is true that 3 is an element of A. The other two elements of A are 1 and 5.
2.
Let E = {−1, −2, −3}. Compute the cardinality ∣E∣ of E: point
−3
E
0
3
Correct
Recall that the cardinality of a set is the number of elements in it.
Since E has three elements (which are −1, −2, −3), the cardinality of
E is ∣E∣ = 3.
3. Let A = {1, 3, 5} and B = {3, 5, 10, 11, 14}.
Which of the following sets is equal to the intersection A ∩ B?
,5/25/2020 Practice quiz on the Number Line, including Inequalities | Coursera
x = −1 and y = 0
x = 5 and y = 3.3
x = 1 and y = 7.3
x = −17.3 and y = −17.1
Correct
The statement x < y means that x is to the left of y on the real number
line. Since 5 is to the right of 3.3, these cannot be values for x and y.
4. Suppose I tell you thatw is a real number which makes both of the following point
statements true: w >1 and w < 1.2. Which of the following numbers could be w?
w = 1.05
w = 11
w = 1.2
w=0
Correct
1.05 > 1 is true since 1.05 is to the right of 1 on the real number line,
and 1.05 < 1.2 is also true, since 1.05 is to the left of 1.2 on the real
number line.
5. Suppose that x and y are two real numbers which satisfy x+ 3 = 4y + 1. Which point
of the following statements are false?
, 5/25/2020 Practice quiz on the Number Line, including Inequalities | Coursera
x + 2 = 4y
x = 4y
Correct
The equation x = 4y cannot be derived from the given equation.
6.
Which of the following real numbers is in the open interval (2, 3)? point
3
2.1
2
1
Correct
Recall that the open interval (2,
3) consists of all real numbers xwhich
satisfy 2 < x < 3. Since 2.1 > 2 and 2.1 < 3, the number 2.1 is in this
open interval.
7.
Which of the following real numbers are in the open ray (3.1, ∞)? point
0
3.1
4.75
−5
Correct
Recall that (3.1, ∞) = {x ∈ R| x > 3.1}. Since 4.75 > 3.1 is true,
4.75 ∈ (3.1, ∞).
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